/* ══════════════════════════════════════════════
   CSS VARIABLES
══════════════════════════════════════════════ */
:root {
  --orange:#E8622A; --orange-light:#F07340; --orange-dark:#C94E1A;
  --bg:#1A1A1A; --card:#252525; --card2:#2E2E2E;
  --text:#FFFFFF; --sub:#9A9A9A;
  --bl:#F0D9B5; --bd:#B58863;
  --green:#4CAF7D; --red:#E05555;
  --max-game:460px; --max-page:1200px;
  --radius:16px; --gap:12px;
}
body.light {
  --bg:#F2EDE8; --card:#FFFFFF; --card2:#F5F0EB;
  --text:#1A1A1A; --sub:#888888;
}

/* ══════════════════════════════════════════════
   RESET & BASE
══════════════════════════════════════════════ */
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html{scroll-behavior:smooth;}
body{
  font-family:'Outfit',sans-serif;
  background:var(--bg);
  color:var(--text);
  min-height:100vh;
  line-height:1.5;
  transition:background .3s,color .3s;
}

/* ══════════════════════════════════════════════
   SITE HEADER (full-width nav bar)
══════════════════════════════════════════════ */
.site-header{
  width:100%;
  background:var(--card);
  border-bottom:1px solid rgba(232,98,42,.2);
  position:sticky;top:0;z-index:200;
  box-shadow:0 2px 12px rgba(0,0,0,.25);
}
.header-inner{
  max-width:var(--max-page);
  margin:0 auto;
  padding:10px 20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;}
.brand-logo{
  width:38px;height:38px;
  background:var(--orange);border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:22px;flex-shrink:0;
}
.brand-name{font-size:22px;font-weight:800;color:var(--orange);letter-spacing:-.5px;}
.brand-badge{
  background:var(--card2);color:var(--orange);
  border:1px solid var(--orange);border-radius:20px;
  font-size:10px;font-weight:700;padding:2px 8px;letter-spacing:.5px;
  white-space:nowrap;
}
.header-nav{display:flex;align-items:center;gap:8px;}
.nav-tab{
  padding:7px 14px;border-radius:10px;
  font-size:13px;font-weight:600;
  cursor:pointer;border:none;
  font-family:'Outfit',sans-serif;
  transition:all .2s;
  background:transparent;color:var(--sub);
}
.nav-tab:hover{color:var(--text);}
.nav-tab.active{background:var(--orange);color:#fff;box-shadow:0 3px 12px rgba(232,98,42,.35);}
.theme-btn{
  width:36px;height:36px;
  background:var(--card2);border:1px solid rgba(255,255,255,.1);
  border-radius:9px;display:flex;align-items:center;justify-content:center;
  font-size:16px;cursor:pointer;border:none;
  font-family:'Outfit',sans-serif;
  transition:background .2s;flex-shrink:0;
}
body.light .theme-btn{border:1px solid #DDD;}

/* ══════════════════════════════════════════════
   PAGE SHELL — single column centered layout
══════════════════════════════════════════════ */
.page-shell{
  max-width:var(--max-page);
  margin:0 auto;
  padding:20px 16px 48px;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:24px;
}
@media(min-width:900px){
  .page-shell{
    gap:48px;
    padding:28px 24px 64px;
  }
}

/* ══════════════════════════════════════════════
   GAME COLUMN
══════════════════════════════════════════════ */
.game-col{
  display:flex;flex-direction:column;gap:var(--gap);
  width:100%;
  max-width:var(--max-game);
}

/* breadcrumb */
.breadcrumb{
  font-size:12px;color:var(--sub);
  display:flex;align-items:center;gap:4px;flex-wrap:wrap;
}
.breadcrumb a{color:var(--orange);text-decoration:none;}
.breadcrumb a:hover{text-decoration:underline;}

/* mode toggle */
.mode-toggle{
  display:flex;background:var(--card);
  border-radius:12px;padding:4px;border:1px solid rgba(255,255,255,.07);
}
body.light .mode-toggle{border-color:#DDD;}
.mode-btn{
  flex:1;padding:8px;border-radius:9px;
  font-size:13px;font-weight:700;text-align:center;
  cursor:pointer;border:none;font-family:'Outfit',sans-serif;transition:all .2s;
}
.mode-btn.on{background:var(--orange);color:#fff;}
.mode-btn.off{background:transparent;color:var(--sub);}

/* game view */
#gameView{display:flex;flex-direction:column;gap:var(--gap);}

/* player cards */
.player-card{
  background:var(--card);border-radius:var(--radius);
  padding:12px 14px;display:flex;align-items:center;
  justify-content:space-between;border:1px solid rgba(255,255,255,.07);
  position:relative;overflow:hidden;transition:border-color .3s,box-shadow .3s;
}
body.light .player-card{border-color:#DDD;}
.player-card.active-turn{
  border-color:var(--orange);
  box-shadow:0 0 0 1px var(--orange),0 4px 20px rgba(232,98,42,.18);
}
.player-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:2px;
  background:transparent;transition:background .3s;
}
.player-card.active-turn::before{background:var(--orange);}
.player-left{display:flex;align-items:center;gap:10px;}
.avatar{
  width:42px;height:42px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:800;flex-shrink:0;
}
.avatar.p1{background:#2C1A0E;border:1.5px solid var(--orange);color:var(--orange);}
.avatar.p2{background:#0E1A2C;border:1.5px solid #4A90D9;color:#4A90D9;}
.player-info{display:flex;flex-direction:column;gap:2px;}
.player-name{font-size:15px;font-weight:700;}
.player-color{font-size:11px;font-weight:600;color:var(--sub);text-transform:uppercase;letter-spacing:.8px;}
body.light .player-color{color:#888;}
.player-right{display:flex;flex-direction:column;align-items:flex-end;gap:4px;}
.timer-box{
  display:flex;align-items:center;gap:5px;
  background:var(--card2);border-radius:8px;
  padding:5px 11px;font-size:16px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
body.light .timer-box{background:#F0EDE9;color:#1A1A1A;}
.timer-box.urgent{color:var(--orange);}
.eval-badge{font-size:12px;font-weight:700;padding:2px 8px;border-radius:6px;}
.eval-badge.pos{color:var(--green);}
.eval-badge.neg{color:var(--red);}
.your-turn-badge{
  background:var(--orange);color:#fff;font-size:9px;font-weight:800;
  padding:2px 8px;border-radius:20px;letter-spacing:.5px;text-transform:uppercase;
  animation:pulse-b 1.5s ease-in-out infinite;
}
@keyframes pulse-b{0%,100%{opacity:1;}50%{opacity:.6;}}

/* board */
.board-wrap{
  background:var(--card);border-radius:var(--radius);
  padding:10px;border:1px solid rgba(255,255,255,.07);
}
body.light .board-wrap{border-color:#DDD;}
.board-inner{display:flex;transition:transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);}
.rank-labels{display:flex;flex-direction:column;justify-content:space-around;padding:0 4px 0 0;transition:transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);}
.rank-label{
  font-size:10px;font-weight:600;color:var(--sub);
  display:flex;align-items:center;
}
.board{display:grid;grid-template-columns:repeat(8,1fr);flex:1;border-radius:8px;overflow:hidden;}
.board-label-row{display:flex;justify-content:space-around;padding:4px 20px 0;transition:transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);}
.file-label{font-size:10px;font-weight:600;color:var(--sub);text-align:center;flex:1;}
.sq{
  aspect-ratio:1;display:flex;align-items:center;justify-content:center;
  font-size:clamp(14px,3.5vw,30px);cursor:pointer;
  transition:background .12s;position:relative;user-select:none;
}
@media(min-width:900px){.sq{font-size:clamp(20px,2.5vw,32px);}}
.sq.light-sq{background:var(--bl);}
.sq.dark-sq{background:var(--bd);}
.sq.selected{background:rgba(232,98,42,.55)!important;}
.sq.last-from{background:rgba(232,98,42,.25)!important;}
.sq.last-to{background:rgba(232,98,42,.4)!important;}
.sq.hint::after{
  content:'';position:absolute;
  width:32%;height:32%;border-radius:50%;
  background:rgba(0,0,0,.2);pointer-events:none;
}
.sq.pc-w { color: #ffffff; text-shadow: 0 2px 4px rgba(0,0,0,0.5); }
.sq.pc-b { color: #000000; text-shadow: 0 2px 4px rgba(255,255,255,0.4); }
body.light .sq.pc-w { color: #ffffff; text-shadow: 0 2px 4px rgba(0,0,0,0.6); }
body.light .sq.pc-b { color: #222222; text-shadow: 0 2px 2px rgba(255,255,255,0.8); }

/* pass button */
.pass-row{display:flex;align-items:center;justify-content:center;gap:10px;padding:2px 0;}
.pass-icon{font-size:20px;animation:spin-d 3.5s ease-in-out infinite;}
@keyframes spin-d{0%,100%{transform:rotate(0deg);}35%,65%{transform:rotate(180deg);}}
.pass-btn{
  display:flex;align-items:center;gap:8px;
  background:linear-gradient(135deg,var(--orange),var(--orange-dark));
  color:#fff;border:none;border-radius:14px;
  padding:12px 24px;font-size:15px;font-weight:700;
  font-family:'Outfit',sans-serif;cursor:pointer;
  box-shadow:0 4px 18px rgba(232,98,42,.4);
  transition:all .15s;
}
.pass-btn:active{transform:scale(.97);box-shadow:0 2px 8px rgba(232,98,42,.3);}

/* controls */
.controls{display:flex;gap:8px;}
.ctrl-btn{
  flex:1;display:flex;align-items:center;justify-content:center;gap:6px;
  background:var(--card);border:1px solid rgba(255,255,255,.08);border-radius:12px;
  padding:9px 0;font-size:13px;font-weight:600;color:var(--sub);
  font-family:'Outfit',sans-serif;cursor:pointer;transition:all .15s;
}
body.light .ctrl-btn{border-color:#DDD;color:#888;}
.ctrl-btn:active{background:var(--card2);color:var(--text);}
.ctrl-btn.danger{color:var(--red);border-color:rgba(224,85,85,.25);}
.ctrl-btn.primary{color:var(--orange);border-color:rgba(232,98,42,.25);}

/* eval bar */
.eval-wrap{
  background:var(--card);border-radius:var(--radius);
  padding:10px 14px;border:1px solid rgba(255,255,255,.07);
  display:flex;align-items:center;gap:10px;
}
body.light .eval-wrap{border-color:#DDD;}
.eval-lbl{font-size:11px;color:var(--sub);font-weight:600;white-space:nowrap;}
.eval-bar{
  flex:1;height:8px;background:rgba(0,0,0,.3);
  border-radius:4px;overflow:hidden;position:relative;
}
body.light .eval-bar{background:#DDD;}
.eval-fill{
  position:absolute;top:0;bottom:0;left:0;
  background:linear-gradient(90deg,#fff,#e0e0e0);
  border-radius:4px;transition:width .5s ease;
}
body.light .eval-fill{background:linear-gradient(90deg,#333,#555);}
.eval-score{font-size:13px;font-weight:700;color:var(--green);white-space:nowrap;}

/* move history */
.move-history{
  background:var(--card);border-radius:var(--radius);
  padding:12px 14px;border:1px solid rgba(255,255,255,.07);
}
body.light .move-history{border-color:#DDD;}
.move-history h3{
  font-size:11px;font-weight:700;color:var(--sub);
  text-transform:uppercase;letter-spacing:1px;margin-bottom:10px;
}
.moves-grid{
  display:grid;grid-template-columns:24px 1fr 1fr;
  gap:4px 8px;font-size:13px;font-variant-numeric:tabular-nums;
}
.move-num{color:var(--sub);font-weight:600;text-align:right;}
.move-cell{
  padding:3px 7px;border-radius:6px;font-weight:600;
  cursor:pointer;transition:background .15s;
}
.move-cell:hover{background:var(--card2);}
.move-cell.current{background:var(--orange);color:#fff;}

/* setup */
.setup-card{
  background:var(--card);border-radius:var(--radius);
  padding:14px;border:1px solid rgba(255,255,255,.07);
}
body.light .setup-card{border-color:#DDD;}
.setup-title{font-size:11px;font-weight:700;color:var(--sub);text-transform:uppercase;letter-spacing:1px;margin-bottom:10px;}
.setup-row{display:flex;align-items:center;justify-content:space-between;padding:7px 0;border-bottom:1px solid rgba(255,255,255,.05);flex-wrap:wrap;gap:6px;}
body.light .setup-row{border-color:#EEE;}
.setup-row:last-child{border-bottom:none;}
.setup-key{font-size:14px;font-weight:500;}
.toggle-row{display:flex;gap:5px;flex-wrap:wrap;}
.toggle-opt{
  padding:4px 11px;border-radius:8px;font-size:12px;font-weight:700;
  cursor:pointer;border:1px solid rgba(255,255,255,.12);
  background:transparent;color:var(--sub);font-family:'Outfit',sans-serif;transition:all .15s;
}
body.light .toggle-opt{border-color:#CCC;color:#888;}
.toggle-opt.on{background:var(--orange);border-color:var(--orange);color:#fff;}

/* ══════════════════════════════════════════════
   CONTENT COLUMN (SEO)
══════════════════════════════════════════════ */
.content-col{
  display:flex;flex-direction:column;gap:20px;
  width:100%;
  max-width:800px;
}

/* hero / H1 */
.seo-hero{
  background:linear-gradient(135deg,rgba(232,98,42,.12),rgba(232,98,42,.03));
  border:1px solid rgba(232,98,42,.25);
  border-radius:var(--radius);padding:24px 20px;
}
body.light .seo-hero{background:linear-gradient(135deg,#FFF3EC,#FFF8F5);border-color:#F0C8A8;}
.seo-hero h1{font-size:clamp(20px,3vw,28px);font-weight:800;color:var(--orange);margin-bottom:10px;line-height:1.2;}
.seo-hero p{font-size:14px;line-height:1.65;color:var(--sub);}
body.light .seo-hero p{color:#555;}
.hero-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:5px;
  background:var(--card2);border-radius:20px;
  font-size:12px;font-weight:600;padding:4px 12px;color:var(--sub);
}
body.light .hero-tag{background:#F0EDE9;color:#666;}
.hero-tag span{color:var(--orange);}

/* features grid */
.features-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(160px,1fr));
  gap:10px;
}
.feat{
  background:var(--card);border:1px solid rgba(255,255,255,.07);
  border-radius:14px;padding:14px 12px;
  display:flex;flex-direction:column;gap:6px;
  transition:border-color .2s,transform .2s;
}
body.light .feat{border-color:#E0E0E0;}
.feat:hover{border-color:rgba(232,98,42,.4);transform:translateY(-2px);}
.feat-icon{font-size:22px;}
.feat-title{font-size:13px;font-weight:700;}
.feat-desc{font-size:12px;color:var(--sub);line-height:1.45;}
body.light .feat-desc{color:#777;}

/* content cards */
.content-card{
  background:var(--card);border:1px solid rgba(255,255,255,.07);
  border-radius:var(--radius);padding:20px;
}
body.light .content-card{border-color:#DDD;}
.content-card h2{font-size:18px;font-weight:800;margin-bottom:14px;}
.content-card h3{font-size:15px;font-weight:700;margin:14px 0 6px;color:var(--orange);}

/* how-to steps */
.howto-step{display:flex;gap:12px;align-items:flex-start;margin-bottom:14px;}
.howto-step:last-child{margin-bottom:0;}
.step-num{
  width:28px;height:28px;min-width:28px;
  background:var(--orange);border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;color:#fff;margin-top:1px;
}
.step-text{font-size:13px;line-height:1.6;color:var(--sub);}
body.light .step-text{color:#555;}
.step-text strong{color:var(--text);font-weight:700;}
body.light .step-text strong{color:#1A1A1A;}

/* FAQ accordion */
.faq-item{
  border-bottom:1px solid rgba(255,255,255,.07);
  padding:12px 0;cursor:pointer;
}
body.light .faq-item{border-color:#EEE;}
.faq-item:last-child{border-bottom:none;padding-bottom:0;}
.faq-q{
  font-size:14px;font-weight:700;
  display:flex;justify-content:space-between;align-items:center;gap:8px;
}
.faq-arrow{
  font-size:12px;color:var(--orange);
  transition:transform .25s;flex-shrink:0;
}
.faq-item.open .faq-arrow{transform:rotate(180deg);}
.faq-a{
  font-size:13px;line-height:1.6;color:var(--sub);
  max-height:0;overflow:hidden;transition:max-height .3s ease,margin-top .3s;
}
body.light .faq-a{color:#666;}
.faq-item.open .faq-a{max-height:200px;margin-top:8px;}

/* topical articles (internal linking anchors) */
.articles-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;}
@media(max-width:480px){.articles-grid{grid-template-columns:1fr;}}
.article-link{
  background:var(--card2);border-radius:10px;
  padding:10px 12px;font-size:12px;font-weight:600;
  color:var(--orange);text-decoration:none;
  border:1px solid rgba(232,98,42,.15);
  transition:background .15s,border-color .15s;
  display:block;line-height:1.4;
}
body.light .article-link{background:#F5F0EB;border-color:#F0C8A8;}
.article-link:hover{border-color:var(--orange);background:rgba(232,98,42,.08);}
.article-link small{display:block;font-weight:400;color:var(--sub);font-size:11px;margin-top:2px;}

/* author / E-E-A-T */
.author-box{
  display:flex;align-items:center;gap:14px;
  background:var(--card);border:1px solid rgba(255,255,255,.07);
  border-radius:var(--radius);padding:16px;
}
body.light .author-box{border-color:#DDD;}
.author-avatar{
  width:52px;height:52px;border-radius:50%;
  background:linear-gradient(135deg,var(--orange),var(--orange-dark));
  display:flex;align-items:center;justify-content:center;
  font-size:24px;flex-shrink:0;
}
.author-info h3{font-size:14px;font-weight:700;margin-bottom:3px;}
.author-info p{font-size:12px;color:var(--sub);line-height:1.5;}
body.light .author-info p{color:#666;}
.author-creds{display:flex;flex-wrap:wrap;gap:5px;margin-top:7px;}
.cred-tag{
  font-size:10px;font-weight:700;padding:2px 8px;
  border-radius:20px;background:rgba(232,98,42,.12);
  color:var(--orange);border:1px solid rgba(232,98,42,.2);
}

/* reviews / trust signals */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px;}
.review-card{
  background:var(--card2);border-radius:12px;padding:12px 14px;
  border:1px solid rgba(255,255,255,.06);
}
body.light .review-card{background:#F5F0EB;border-color:#E0D9D0;}
.review-stars{color:#F5A623;font-size:13px;margin-bottom:5px;letter-spacing:2px;}
.review-text{font-size:12px;line-height:1.5;color:var(--sub);margin-bottom:6px;}
body.light .review-text{color:#666;}
.review-name{font-size:11px;font-weight:700;color:var(--text);}
body.light .review-name{color:#1A1A1A;}
.review-source{font-size:10px;color:var(--sub);font-weight:600;}

/* share / social signals */
.share-row{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;}
.share-btn{
  display:flex;align-items:center;gap:6px;
  padding:9px 16px;border-radius:11px;font-size:13px;font-weight:700;
  cursor:pointer;border:none;font-family:'Outfit',sans-serif;transition:opacity .15s;
}
.share-btn:active{opacity:.75;}
.share-btn.tw{background:#000;color:#fff;}
.share-btn.wa{background:#25D366;color:#fff;}
.share-btn.rd{background:#FF4500;color:#fff;}
.share-btn.cp{background:var(--card2);color:var(--sub);border:1px solid rgba(255,255,255,.1);}
body.light .share-btn.cp{background:#EEE;color:#666;border-color:#DDD;}
#cpConf{font-size:11px;color:var(--green);height:16px;opacity:0;transition:opacity .3s;text-align:center;}

/* rating display */
.rating-hero{
  text-align:center;padding:20px;
  background:linear-gradient(135deg,rgba(232,98,42,.08),transparent);
  border-radius:var(--radius);border:1px solid rgba(232,98,42,.15);
}
.rating-big{font-size:52px;font-weight:800;color:var(--orange);line-height:1;}
.rating-stars{font-size:20px;color:#F5A623;letter-spacing:3px;margin:6px 0;}
.rating-count{font-size:13px;color:var(--sub);}
body.light .rating-count{color:#888;}

/* footer */
.site-footer{
  background:var(--card);border-top:1px solid rgba(255,255,255,.07);
  padding:32px 20px 48px;margin-top:0;
  text-align:center;
}
body.light .site-footer{border-color:#DDD;}
.footer-inner{max-width:var(--max-page);margin:0 auto;}
.footer-brand{font-size:20px;font-weight:800;color:var(--orange);margin-bottom:6px;}
.footer-tagline{font-size:13px;color:var(--sub);margin-bottom:16px;}
.footer-links{display:flex;justify-content:center;flex-wrap:wrap;gap:6px 18px;margin-bottom:16px;}
.footer-link{font-size:13px;font-weight:600;color:var(--orange);text-decoration:none;}
.footer-link:hover{text-decoration:underline;}
.footer-kw{font-size:10px;color:rgba(128,128,128,.45);line-height:2;margin-bottom:12px;}
.footer-copy{font-size:11px;color:var(--sub);}

/* ══════════════════════════════════════════════
   UTILITY
══════════════════════════════════════════════ */
.section-title{font-size:11px;font-weight:700;color:var(--sub);text-transform:uppercase;letter-spacing:1.2px;margin-bottom:12px;}
.divider-line{height:1px;background:rgba(255,255,255,.07);margin:4px 0;}
body.light .divider-line{background:#E5E5E5;}

/* scrollbar */
::-webkit-scrollbar{width:5px;}
::-webkit-scrollbar-track{background:transparent;}
::-webkit-scrollbar-thumb{background:rgba(232,98,42,.4);border-radius:3px;}

/* focus visible for a11y */
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;}

/* skip link */
.skip-link{
  position:absolute;top:-40px;left:16px;
  background:var(--orange);color:#fff;padding:8px 16px;
  border-radius:0 0 8px 8px;font-weight:700;font-size:13px;
  text-decoration:none;z-index:999;transition:top .2s;
}
.skip-link:focus{top:0;}

/* ══════════════════════════════════════════════
   RESPONSIVE TWEAKS
══════════════════════════════════════════════ */
@media(max-width:480px){
  .header-inner{padding:8px 12px;}
  .brand-name{font-size:18px;}
  .brand-badge{display:none;}
  .nav-tab{padding:6px 10px;font-size:12px;}
  .page-shell{padding:14px 10px 40px;}
  .features-grid{grid-template-columns:1fr 1fr;}
  .review-grid{grid-template-columns:1fr;}
  .pass-btn{padding:10px 18px;font-size:14px;}
}
@media(min-width:481px) and (max-width:899px){
  .features-grid{grid-template-columns:repeat(3,1fr);}
}
@media(min-width:1200px){
  .seo-hero h1{font-size:30px;}
  .features-grid{grid-template-columns:repeat(3,1fr);}
}

/* ══════════════════════════════════════════════
   PC/TABLET KEYBOARD CURSOR & RESPONSIVE CARD ROTATION
══════════════════════════════════════════════ */
#card2 {
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  transform: rotate(180deg);
}

@media (min-width: 768px) {
  #card2 {
    transform: none !important;
  }
}

.sq.keyboard-cursor {
  outline: 3px solid var(--orange) !important;
  outline-offset: -3px;
}

/* ══════════════════════════════════════════════
   ADDITIONAL RESPONSIVE RULES
══════════════════════════════════════════════ */

/* 1. Hide keyboard shortcuts hint on mobile */
.keyboard-shortcuts-hint {
  display: none;
}
@media (min-width: 900px) {
  .keyboard-shortcuts-hint {
    display: block;
  }
}



/* 3. Tighter game column gap on small screens */
@media (max-width: 480px) {
  .game-col {
    gap: 8px;
  }
}

/* 4. Hover effect on squares for desktop */
@media (hover: hover) {
  .sq:hover {
    filter: brightness(1.1);
  }
}

/* 5. Compact footer on mobile/tablet */
@media (max-width: 899px) {
  .site-footer {
    padding: 20px 16px 32px;
  }
  .footer-kw {
    display: none;
  }
}

/* ══════════════════════════════════════════════
   PROMO TOAST (SNAKE GAME)
══════════════════════════════════════════════ */
.promo-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 320px;
  background: var(--card);
  border: 1px solid rgba(232, 98, 42, 0.25);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  animation: slide-in 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  transition: opacity 0.3s, transform 0.3s;
}
body.light .promo-toast {
  background: var(--card);
  border-color: rgba(232, 98, 42, 0.2);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}
@keyframes slide-in {
  from {
    transform: translateY(100px) scale(0.9);
    opacity: 0;
  }
  to {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}
.promo-close {
  position: absolute;
  top: 10px;
  right: 12px;
  background: transparent;
  border: none;
  color: var(--sub);
  cursor: pointer;
  font-size: 14px;
  padding: 4px;
  line-height: 1;
  transition: color 0.15s;
}
.promo-close:hover {
  color: var(--text);
}
.promo-body {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.promo-icon {
  font-size: 32px;
  line-height: 1;
}
.promo-content {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.promo-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--orange);
  margin-bottom: 2px;
}
.promo-text {
  font-size: 12px;
  color: var(--sub);
  line-height: 1.4;
}
body.light .promo-text {
  color: #666;
}
.promo-btn {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  margin-top: 4px;
  background: linear-gradient(135deg, var(--orange), var(--orange-dark));
  color: #fff;
  text-decoration: none;
  padding: 6px 14px;
  font-size: 11px;
  font-weight: 700;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(232, 98, 42, 0.3);
  transition: transform 0.15s;
}
.promo-btn:active {
  transform: scale(0.96);
}
@media (max-width: 480px) {
  .promo-toast {
    bottom: 16px;
    left: 16px;
    right: 16px;
    width: auto;
  }
}

/* ══════════════════════════════════════════════
   AD BANNER
══════════════════════════════════════════════ */
.ad-banner {
  background: var(--card2);
  border: 1px dashed rgba(255, 255, 255, 0.15);
  border-radius: var(--radius);
  padding: 10px;
  text-align: center;
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 12px;
}
body.light .ad-banner {
  border-color: rgba(0, 0, 0, 0.15);
}
.ad-placeholder-text {
  font-size: 11px;
  color: var(--sub);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.ad-banner:hover {
  transform: translateY(-2px);
  border-color: var(--orange);
}